Posted by **Anonymous** on Tuesday, June 19, 2012 at 4:35pm.

the lenght of a species of fish is normally distributed with a mean of 24.3 inches and a standard deviation of 1.8 inches. What is the lenght that is exceeded by 30%of these fish

- statistics -
**bobpursley**, Tuesday, June 19, 2012 at 6:21pm
http://davidmlane.com/hyperstat/z_table.html

- statistics -
**MathGuru**, Tuesday, June 19, 2012 at 6:23pm
You will have to determine z-score (use a z-table with the information you are given), then use the z-score formula to find x (the length).

Z-score formula is this:

z = (x - mean)/sd

mean = 24.3

sd = 1.8

Once you find the z-score in the table, substitute the z-score and the data above into the formula and solve for x.

## Answer this Question

## Related Questions

- Math (Statistics) - (Find Normal Proportions) The lengths of Atlantic croaker ...
- Statistics - The weights of the fish in a certain lake are normally distributed ...
- Statistics - Assuming that the heights of college women are normally distributed...
- Statistics - Assuming that the heights of college women are normally distributed...
- statistics - The heights of South African men are normally distributed with a ...
- statistics - Heights of fences are normally distributed with a mean of 52 inches...
- statistics - A manufacturer knows that their items have a normally distributed ...
- statistics - The amount of snow fall falling in a certian mountain range is ...
- statistics - The distribution of heights of American women aged 18 to 24 is ...
- Statistics - The distribution of heights of American women aged 18 to 24 is ...